h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 440

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 11 Programmable Pulse Generator (PPG)
[1] Set up the TPU channel to be used as the output trigger channel so that TGRA and TGRB are
[2] Write H'FF in P1DDR and NDERH, and set the G3CMS1, G3CMS0, G2CMS1, and G2CMS0
[3] The timer counter in the TPU channel starts. When a compare match with TGRB occurs,
[4] Four-phase complementary non-overlapping pulse output can be obtained subsequently by
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output compare registers. Set the trigger period in TGRB and the non-overlap margin in
TGRA, and set the counter to be cleared by compare match B. Set the TGIEA bit in TIER to 1
to enable the TGIA interrupt.
bits in PCR to select compare match in the TPU channel set up in the previous step to be the
output trigger. Set the G3NOV and G2NOV bits in PMR to 1 to select non-overlapping output.
Write output data H'95 in NDRH.
outputs change from 1 to 0. When a compare match with TGRA occurs, outputs change from 0
to 1 (the change from 0 to 1 is delayed by the value set in TGRA). The TGIA interrupt
handling routine writes the next output data (H'65) in NDRH.
writing H'59, H'56, H'95... at successive TGIA interrupts. If the DTC is set for activation by
this interrupt, pulse output can be obtained without imposing a load on the CPU.